• Title/Summary/Keyword: HakBu(學部)

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Mathematics Textbooks in the 19th Century Chosun (19세기(世紀) 조선(朝鮮)의 수학(數學) 교과서(敎科書))

  • Oh, Chae-Whan;Lee, Sang-Gu;Hong, Sung-Sa;Hong, Young-Hee
    • Journal for History of Mathematics
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    • v.23 no.1
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    • pp.1-24
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    • 2010

  • In 1895, a new school system was introduced in Chosun by the ministry of education HakBu(學部). They published three mathematics textbooks for the new system, GanISaChikMunJeJib(簡易四則問題集) and GeunISanSulSeo(近易算術書) in 1895 and SanSulSinSeo(算術新書) in 1900. Investigating these three books, we show that they played the role of textbooks and gave rise to a pathway of western mathematics into Chosun. Further they greatly influenced the textbooks published in the early 20th century Chosun.

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Effectiveness Analysis of HOT Lane and Application Scheme for Korean Environment (HOT차로 운영에 대한 효과분석 및 국내활용방안)

  • Choi, Kee Choo;Kim, Jin Howan;Oh, Seung Hwoon
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.29 no.1D
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    • pp.25-32
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    • 2009

  • Currently, various types of TDM (Transportation Demand Management) policies are being studied and implemented in an attempt to overcome the limitations of supply oriented policies. In this context, this paper addressed issues of effectiveness and possible domestic implementation of the HOT lane. The possible site of implementation selected for this simulation study is part of the Kyung-bu freeway, where a dedicated bus lane is currently being operated. Minimum length of distance required in between interchanges and access points of the HOT lane for vehicles to safely enter and exit the lane, and traffic management policies for effectively managing the weaving traffic trying to enter and exit the HOT lane were presented. A 5.2km section of freeway from Ki-heuing IC to Suwon IC and a 8.3km section from Hak-uei JC to Pan-gyo JC have been selected as possible sites of implementation for the HOT lane, in which congestion occurs regularly due to the high level of travel demand. VISSIM simulation program has been used to analyze the effects of the HOT lane under the assumption that one-lane HOT lane has been put into operation in these sections and that the lane change rate were in between 5% to 30%. The results of each possible scenario have proven that overall travel speed on the general lanes have increased as well by 1.57~2.62km/h after the implementation of the HOT lane. It is meaningful that this study could serve as a basic reference data for possible follow-up studies on the HOT lane as one effective method of TDM policies. Considering that the bus travel rate would continue increase and assuming the improvement in travel speed on general lanes, similar case study can be implemented where gaps between buses on bus lane are available, as a possible alternative of efficient bus lane management policies.

  • https://doi.org/10.12652/Ksce.2009.29.1D.025 인용 PDF